$ git clone https://github.com/quickjs-ng/quickjs
$ cd quickjs
$ make
$
$./build/qjs tests/microbench.js 
                  TEST          N TIME (ns)  REF (ns) SCORE (%)
            empty_loop     500000      9.20
              date_now     100000     37.00
             prop_read     100000      7.28
            prop_write     100000      5.73
           prop_create      10000     69.25
           prop_delete      50000     71.60
            array_read      50000      8.62
           array_write      20000     17.19
     array_prop_create        100     26.30
     array_length_decr        200     12.39
array_hole_length_decr        200     19.25
            array_push        100     45.00
             array_pop        100     66.40
      typed_array_read      50000      8.36
     typed_array_write      20000     17.20
           global_read     200000      3.98
          global_write     100000      9.20
   global_write_strict     200000      3.90
        local_destruct       1000    182.83
       global_destruct       5000     63.20
global_destruct_strict       2000    170.00
             func_call      50000     18.04
           closure_var      50000     18.44
             int_arith        200     10.00
           float_arith        200     12.50
    set_collection_add        100    252.50
             array_for       2000     10.35
          array_for_in        500     93.72
          array_for_of       2000     17.61
              math_min        100     34.20
          regexp_ascii          1    669.80
          regexp_utf16          1    677.40
         string_build1        200     82.80
         string_build2        200     85.20
            sort_bench          1      1.55
         int_to_string      50000     73.00
       float_to_string       5000    570.00
         string_to_int      50000     42.70
       string_to_float      50000     55.40
        bigint64_arith         10    316.00
       bigint256_arith         10    306.00
                 total              4201.09
$